At any time upon petition signed by the absentee, or on petition of any attorney in fact acting under an adequate power of attorney granted by the absentee, the court shall direct the termination of the conservatorship and the transfer of all property held under the conservatorship to the absentee or to the designated attorney in fact. Likewise, if at any time subsequent to the appointment of a conservator it shall appear that the absentee has died and an executor or administrator has been appointed for his or her estate, the court shall direct the termination of the conservatorship and the transfer of all property of the deceased absentee held under the conservatorship to the executor or administrator.